Support `runtime` in v3.x compose files

[mathstuf]

Description of the issue

The runtime option exists in v2.3, but not v3.x.

[bhack]

The lack of runtime selection it is creating many portability problems at Docker build time. See docker/app#241 (comment)

[xkortex]

I am not particular how it is implemented, but I would really appreciate using compose v3.X with CUDA GPU containers. My current choice is either DC.yml v2.X files, or Makefiles.

[qhaas]

This is likely now OBE given how nvidia has altered nvidia-docker, see #6691

That is... assuming folks were only using runtime for nvidia-docker...

[mathstuf]

I was interested in it for OCI hooks personally, but have ended up not going with docker-compose anyways, so this sort of fell off my plate. Guidance for continuing this is over on #6240.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because it had not recent activity during the stale period.